Singapore is hot and humid year-round, straddling the equator at 1°N. Temperatures are consistently 26–32°C with high humidity throughout the year. There is no true dry season — rain can fall any month. The wettest period is November–January (northeast monsoon), and a secondary wet period occurs May–July.
The best strategy is to plan indoor activities for the hottest part of the day (noon–3pm) and explore outdoors in early morning or late afternoon. Air conditioning is ubiquitous in malls, restaurants, and public transport. Light cotton clothing, a compact umbrella, and sunscreen are your essential travel companions.